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l=((cot^2x.cos^2x)/(cot^2x-cos^2x))^2 an...

`l=((cot^2x.cos^2x)/(cot^2x-cos^2x))^2` and `m=a^(log_(sqrt(a))[2cos(y/2)]` at `y=4pi` then `l^2+m^2` is equal to

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ALLEN-TRIGONOMETRIC RATIOS AND IDENTITIES-All Questions
  1. If A and C are two angles such that A+C=(3pi)/4 then (1+cotA)(1+cotC)=

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  2. (log)(t1)(4sin9^0cos9^0)w h e r e\ t1=4sin 63^0cos 63^0\ e q u a l s ...

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  3. l=((cot^2x.cos^2x)/(cot^2x-cos^2x))^2 and m=a^(log(sqrt(a))[2cos(y/2)]...

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  4. If (a+b)tan(theta-varphi)=(a-b)tan(theta+varphi),\ t h e n(sin(2theta)...

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  5. If theta is the internal angle of n sided regular polygon, then sinthe...

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  6. Let m=t a n3\ a n d\ n=s e c6,\ then which of the following statement...

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  7. "I f"pi<2theta<(3pi)/2,"t h e n"sqrt(2+sqrt(2+2cos4theta))

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  8. (sin^3theta-cos^3theta)/(sintheta-costheta)-(costheta)/(sqrt(1+cot^2th...

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  9. If sce A=17/8 and cosec B=5/4, then sec(A+B) can have the value equal ...

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  10. Which os the following when simplified reduces to unity ? (1-2sin^2alp...

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  11. It is known that sinbeta=4/5 and 0 < beta < pi then the value of (sqrt...

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  12. In a triangle ABC, angle A is greater than angle B. If the measures of...

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  13. If (sin3theta)/(sintheta)=(11)/(25)\ t h e ntan(theta/2) can have the...

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  14. The expression ((cos A-cos B)/(sin A-sin B))^m+((sin A+sin B)/(cos A-c...

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  15. If cos(A-B)=3/5a n d\ t a n AtanB=2, t h e n cos A\ cosB=1/5 b. cosA...

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  16. If A+B=pi/3a n d\ cos A+cos B=1,\ t h e n- a.cos(A-B)=1//3 b. \ |cos ...

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  17. If Aa n dB are acute positive angles satisfying the equations 3sin^2A...

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  18. If A+B-C=3pi,\ t h e n\ sin A+ sin B-sin C is equal to- a.4sin(A/...

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  19. If tan^2 theta+ cot^2 theta=52, then the value of tan^2 theta+ cot^2...

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  20. Given both thetaa n dphi are acute angles and sintheta=1/2,cosvarphi=...

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